Indicate which of the following choices correctly ranks the given objects in size, from smallest to largest.

A) bacterium, virus, protein, animal cell, frog egg
B) protein, bacterium, virus, animal cell, frog egg
C) virus, protein, bacterium, animal cell, frog egg
D) protein, virus, bacterium, frog egg, animal cell
E) protein, virus, bacterium, animal cell, frog egg